// ============================================================================
// FileName: ProxyMonitorChannel.cs
//
// Description:
// A channel to communicate proxy and server events to connected monitor agents.
// The channel uses a Connect then Push mechanism. So the monitor agent connects
// and will then have events pushed down to it. It's up to the monitor agent do
// any processing or filtering of the events for human operators.
//
// Author(s):
// Aaron Clauson
//
// History:
// 18 Aug 2006	Aaron Clauson	Created.
//
// License: 
// This software is licensed under the BSD License http://www.opensource.org/licenses/bsd-license.php
//
// Copyright (c) 2006 Aaron Clauson (aaronc@blueface.ie), Blue Face Ltd, Dublin, Ireland (www.blueface.ie)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are permitted provided that 
// the following conditions are met:
//
// Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 
// Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
// disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of Blue Face Ltd. 
// nor the names of its contributors may be used to endorse or promote products derived from this software without specific 
// prior written permission. 
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
// BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 
// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
// POSSIBILITY OF SUCH DAMAGE.
// ============================================================================

using System;
using System.Data;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using mimosa.Net;
using log4net;

#if UNITTEST
using NUnit.Framework;
#endif

namespace mimosa.SIPServer
{
	/// <summary>
	/// Channel to allow proxy server events to be pushed to monitor agent.
	/// </summary>
	public class ProxyMonitorChannel
	{
		private static ILog logger = log4net.LogManager.GetLogger("SIPServers");

		private static UdpClient m_monitorClient = new UdpClient();
		private static IPEndPoint m_monitorEndPoint = null;

		//private BinaryFormatter m_binaryFormatter = new BinaryFormatter();
		
		public ProxyMonitorChannel(int monitorPort) 
		{
			m_monitorEndPoint = new IPEndPoint(IPAddress.Loopback, monitorPort);
		}

		public void Send(ProxyMonitorEvent proxyEvent)
		{
			try
			{
				if(proxyEvent != null && proxyEvent.Message != null && proxyEvent.Message.Length > 0)
				{
					string proxyEventStr = proxyEvent.ToCSV();
					m_monitorClient.Send(Encoding.ASCII.GetBytes(proxyEventStr), proxyEventStr.Length,  m_monitorEndPoint);
				}
			}
			catch(Exception excp)
			{
				logger.Error("Exception ProxyMonitorChannel Send. (" + excp.GetType().ToString() + ") " + excp.Message);
			}
		}
	}
}
